# Posts by ASh

Total # Posts: 556

**Chemistry**

Is thw positive valence of AlCl3 1 or 3 why?

**Chemistry**

Calculate the delta G of the reaction using the following information. 4HNO3+ 5N2H4 --> 7N2+ 12H2O Delta H(Kj/mol) -133.9 50.6 0 -285.8 Delta S(J/mol x K) 266.9 121.2 191.6 70.0

**math**

A= (x/7<x<8,x i s a counting number)

**Chemistry**

Frequency(v)=5×10to the power9 c=3×10to the power8 Wave length=c/v . . =3×10 8 /5×10 9 . . =?????

**Maths**

Ooops. Sorry...

**Maths**

To solve: 3×10tothepower8/5×10tothepower9

**Maths**

Thanku reiny

**Maths**

Thanks but i dont want tan theta= 1 to prove i want the value of theta is -3pi/4

**Maths**

Tan theta=1 Can theta=-3pi/4? How?

**Maths**

But the answer should be -2/5

**Maths**

Let z1=2-i,z2=-2+i Find. Re(z1z2/modulus of z1) I only know that modulus of z1= 2+i I have no idea . how to solve this?

**Maths**

Thanks for helping me

**Maths**

Thanks for helping m

**Maths**

Convert the complex no. In polar form : 1-i rcos? =1 rsin?=-1 r=?a2+b2 r=?(1)2+(-1)2 r=?2 Tan?=b/a =1/-1 =-1 After all this what i have to do to find out value of ?? Please help me.. For polar form, =r(cos?+isin?)

**physics , math**

The hydrostatic equation holds not just for air, but for other fluids such as water (air, though it is a gas, is often referred to as a 'fluid') as well. In the case of water the equation becomes even easier, as water (as opposed to air) can be treated as ...

**Maths**

Let the point p[4,-2] =[x1,y1] a[....] =[x2,y2] B[....] =[x3,y3] Now put the value in this formula, 1/2[x1(y2-y3)+x2(y3-y1)+x3(y1-y2)]=O Your answer will be 2. I mean value of k will be 2

**algebra**

solve log2x-6^256=4

**math trignometry**

Belated thanks...

**math trignometry**

Sin x\2,cos x\2 and tan x\2 for sin x=1\4. x in II quadrant.

**Math**

12= 3x/4 48=3x x=16

**Biology**

keep using punnet squares to cross the genotypes of parents!

**Biology**

50% dd x Dd= Dd Dd dd dd

**SCIENCE **

In each of the following acid-base reactions, identify the Bronsted acid and base on the left, and their conjugate partners on the right: (a) HPO3 2- + HSO3 - ? H2PO3 - + SO3 2- (b) C6H5NH3 + + OBr- ? HOBr + C6H5NH2 (c) H2PO3 - + CH3CH2CO2H ? CH3CH2CO2 - + H3PO3

**MATH**

A 0.26 M solution of a weak acid HA is 0.35 % ionized. What are the H+ , A- , and HA concentrations at equilibrium? What is Ka?

**Maths**

A clock is set right at 10AM.The clock gains 10 minutes in 24 hours. What will be the true time when the clock indicates 3PM the following day ?

**Maths**

A long wire of some length is cut into small pieces of 216 cm leave a small piece of length of 89 cm if this part were cut into equal pieces each of 18 cm the length of the leftover wire would be

**math**

a person runs 3 meters per sec for 1 min. how far did they go? would it be 3m/s x 1 = 3? is it correct?

**Chemistry**

You are given 1.226 g of a mixture of KClO3 and KCl. When heated, the KClO3 decomposes to KCl and O2, 2 KClO3 (s) ? 2 KCl (s) + 3 O2 (g), and 246 mL of O2 is collected over water at 24 °C. The total pressure of the gases in the collection flask is 755 torr. What is the ...

**English**

By the end of the book, Miss Maudie, Aunt Alexandra, and Calpurnia have all _____. frustrated Jem helped to care for for Helen Robinson earned Scout's respect <my choice incurred Bob Ewell's anger

**math**

someone help dont know the answer i slept in class while the teacher was explaining

**math**

if x is the set of pupils in a certain school and y is the set of pupils who play volleyball in this school.write y complementary in the distinctive method and shade by venn diagram

**Algebara**

wooooo

**algebra 2**

A person playing a game of chance has a 0.25 probability of winning. If the person plays the game 20 times and wins half of that number of times, what is the difference between the theoretical probability and the experimental probability of that person winning ? 0.50 0.25 0.30...

**maths**

An equilateral triangle is inscribed in parabola y^2=4axsuch that the vertex of the triangle is at vertex of parabola find area of triangle

**maths**

Thank u soo mch fr helpin me out..

**maths**

1: Length of lactus rectim of parabola with vertex(1,2) and directrix 3x-4y-2=0 is A) 27/5 B) 18/7 C) 28/5 i kniw the formula to find length of lactus rectum =4a

**Chemistry**

if a sample of gas has a volume of 8.88 ml at -12.0 C and .975 atm. what volume would this sample have at STP?

**Bus. Math**

I'm stuck on this exam also. Ms. Sue can you help???

**Business Math**

Jane is having difficulty deciding whether to put her savings in the Mystic Bank or in the Four Rivers Bank. Mystic offers a 12% rate compounded quarterly, and Four Rivers offers 14% compounded semiannually. Jane has $40,000 to invest and expects to withdraw the money at the ...

**Bus. Math**

What is the net price equivalent Rate of 9-15/18? a) .63427 b) .36427 c) .63573 d) .36573 Answer: B?

**Math**

how do you find the x intercepts for the equation x^2 + 7x -12? like, I know you have to set it equal to 0 but I have no clue what numbers multiply to -12 and add to +7. plz help

**Check my answers**

So do I...

**Check my answers**

I am sure Amber will remember that for next time, since you are saying it repeatedly, good luck with your MATH problem Amber :)

**Econ**

Do you think a nation’s output should be distributed according to income or according to some other standard (such as basic human need)?

**Econ**

Yours, I will cite you

**Econ**

How do you think a nation’s output should be distributed according to income or according to some other standard (such as basic human need)? EXPLAIN

**ART 4 QUESTIONS PLZ HELP ASAP**

4/4 ! thank you!

**physics**

Two chunks of ice are sliding on a frictionless frozen pond. Chunk A, with mass mA=5.0kg, moves with initial velocity vA1=2.0m/s parallel to the x-axis. It collides with chunk B, which has a mass mB=3.0kg and is initially at rest. After the collision, the velocity of chunk A ...

**Math**

A caterer prepares four times as many pizzas as she usually prepares for a large party. The caterer usually prepares 5 pizzas. The caterer also estimates that each party guest will eat 1/4 of a pizza. Can someone tell me the problenm that this would be?

**Pre-Calculus**

Draw the picture and find the area of the parcel of land. Circle your to partial areas and your total area. You start herman a corn and walk 300 yards due north. Then, you turn N 63 degrees E and walk 260 yards. Then, you turn S 55 degrees E and walk 240 yards. Then, you walk ...

**physics**

to what height should a cylindrical vessel of diameter d be filled with a liquid so that due to force on the verticle surface of the vessel be equal to the force on the bottom

**Physics**

A radioactive isotope of Bismuth undergoes Beta Decay with a half-life of 22 days. How long (in days) will it take the Activity (A) of the sample to decrease to one-ninth of its original value? Assume that the original activity is A0.

**math**

a ribbon is 7/9 of a yd long.divided by 3 people, what length will ea get?

**maths simplify fractions**

2 and 1over 4plus 5over8mines1over 2

**Social Studies**

Ms.sue what is wrong with you

**Chemistry**

A vessel initially contains pure A at a pressure of 1.0 bar. The total pressure of all gases at equilibrium is 1.5 bar. What is K for this reaction? A (g) <--> B (g) + C (g)

**Chemistry**

A vessel initially contains pure A at a pressure of 1.0 bar. The total pressure of all gases at equilibrium is 1.5 bar. What is K for this reaction? A (g) <--> B (g) + C (g)

**Chemistry**

A vessel initially contains pure A at a pressure of 1.0 bar. The total pressure of all gases at equilibrium is 1.5 bar. What is K for this reaction? A (g) <--> B (g) + C (g)

**Math**

simplify the complex fraction 4/x+5 +2 _________ 14/x+5 -2 Once i multiply by the LCD i get 4+2(x+5)/14-2(x+5) however i can't see what i can do next to simplify can you explain.

**Chemistry**

Aldol Condensation What might be the result if you did not add enough Hydrochloric acid and the final pH remained about 7? -Yield would likely increase and the purity of the product would increase -Yield would likely decrease and the purity of the product would decrease -Yield...

**math**

Keri walks her dog every morning. The length of the walk is 0.55 on each weekday. On each weekend day, the walk is 1.4 times as long as a walk on a weekday. How many kilometers did Keri walk in one week

**math fractions**

I got 8 6/7

**Chemistry**

During the synthesis of a Grignard reagent in diethyl ether solvent, what is the identity of the bubbles that show up on the surface of the magnesium? -Gaseous magnesium byproducts -Gaseous O2 -Gaseous H2 -Gaseous diethyl ether

**Organic Chemistry**

During the synthesis of a Grignard reagent in diethyl ether solvent, what is the identity of the bubbles that show up on the surface of the magnesium? -Gaseous magnesium byproducts -Gaseous O2 -Gaseous H2 -Gaseous diethyl ether

**Physical Science- Atomic Structure**

An electron jumps from energy level 1 to energy level 2 by absorbing a photon of energy 8 eV. What is the most likely energy of the photon that will be emitted by the electron when it moves back down to energy level 1? 2 eV 4 eV 8 eV 12 eV

**math**

|x^{2}-16x+56| = -4x-7 what does x equal?

**Physics**

93.34

**statistics**

a private opinion poll is conducted for a politician to determine why proportion of the population favors decriminalizing marijuana possession. how large a sample is needed in order to be 90 percent confident that the sample proportion will not differ from the true proportion ...

**Algebra**

For the following equation of a hyperbola determine the center, vertices, foci, and asymptotes? 36x^2-y^2-24x+6y-41=0

**Algebra**

how do you determine vertices?

**chemistry**

At a certain temperature, the Kp for the decomposition of H2S is 0.734.Initially, only H2S is present at a pressure of 0.102 atm in a closed container. What is the total pressure in the container at equilibrium?

**History**

Yea you are right I have no idea why it is called open study you can't even ask questions from your test or study's xD

**Biology**

sorry the last one go cut off.. and was wrong one A man and his wife both have normal vision, but a daughter who has color blindness can the man sue his wife for infidelity?

**Biology**

need help quickly please If barred pattern on chicken wings is a sex linked trait, set up a cross (hen and rooster), in which they the newly hatched chicks can be determined as male or female based on the barred pattern. and Color Blindness is inherited as a sex linked ...

**Biology**

Color Blindness is inherited as a sex linked recessive. If a color blind woman marries a man with normal vision, what would you expect in their children? Show a cross I put that X- x- Xx x-

**Business Math**

I believe that answer is incorrect. it would likely be $546.67?

**Math**

Adam wants to compare the fractions 2/5, 1/6 and 1/3. He wants to order them from least to greatest and rewrite them so they all have th same denominator. Explain how Adam can rewrite the fractions.

**MATH**

The length of Super Bowl commercials is said to be Normally distributed with a mean of 36 seconds and standard deviation of 8 seconds. a. Find the probability that a randomly selected Super Bowl commercial is shorter than 45 seconds? (2 points) b. Find the probability that a ...

**physics**

a rock is thrown vertically upward from ground level at t=0. At t= 1.5s, it passes the top of a tall tower and 1.0 s later, it reached its maximum height. what is the height of the tower?

**Math**

Also, I don't think they are parallel because if it's parallel then it would be equal and the angles *124 and 118* are not equal.

**Math**

Sorry I was trying to explain the picture. They are consecutive interior angles

**Math**

1. is line "L" parallel to line "M"? *picture of a transversal.. lines L and M don't touch and one line crosses through line L and M to create a transversal. angles 124 and 118 are on the bottom left side of the transversal* I tried my best to explain ...

**Math**

Okay. So, I would've chosen the right answer if I understand the question. Thanks Ms. Sue!

**Math**

find the sum of the interior angles of a nonagon. I know a nonagon has 9 sides.. A. 140 degrees B. 1,620 degrees C. 1,260 degrees D. 1,450 degrees If the question is asking for each interior angle then I think the answers A but if it's asking for the sum of ALL the ...

**Art check please**

1. A 2. D 3. C

**S.S**

Ms. Sue, is it C?

**S.S**

Whose mill launched the factory system? A. James Monroe B. Eli Whitney C. Samuell Slater D. Francis Cabot Lowell I think it's D.. am I right?

**science**

explain an animal cell in your own words and two things each part does

**calculus**

64

**Health**

Oh okay.. that's what I thought at first. I can answer the question now. Thank you

**Health**

When it says "within your control" is that saying not in my control ?

**Health**

Two key components to keeping your heart healthy that are within your control are exercise and.. A. diet B. Rest C. heredity D. enviroment I think it's B.. am I right?

**Chemistry grade 11**

5.6g of an organic compound on burning with excess of oxygen gave 17.6g of CO2 and 7.2g H2O. the formula of the compound is?

**language arts**

Oh Oh Oh is it C then?

**language arts**

read the following lines of dialogue from a coversation johnny has with mrs. bessie, the lytes servant. "what happened to that Cousin Sewall?" "Gone to Worcester. Joined up with the Minute Men." "But hes too fat and.." "Soft? No. From now on ...

**math**

how do I rearrange the equation a=d/t if I want to find d?

**math**

a cyclist is travelling with an average velocity of 5.9m/s [w]. what will be his displacement in 1.5 h? please show steps to answer-I tried but couldn't find the answer :(

**Physics**

bob drop a rock from a height of 4.5 m. (the acceleration due to gravity is 9.8 m/s^2) 1.at s the initial speed of the rock 2. how long is the rock falling before it hits the ground c. what is the final speed of the rock? [I have trouble with c) My work: a) v1 =0m/s b) v1t +1/...

**Biology**

Compare and contrast the traits and growth patterns of opportunistic versus equilibrium populations.

**Biology**

Explain how human activities can cause an imbalance in biogeochemical cycling and lead to problems such as cultural eutrophication and fish kills.